Athletes competing in the 2016 Olympic Games in Brazil have been warned by doctors, engineers, and scientists to keep their mouths shut while participating in activities in the water.

Researchers found that many of the beaches in Rio de Janeiro have been long contaminated with raw sewage, household garbage, and even dead bodies, creating hazardous swimming conditions for the 500,000 people expected to descend on the city in August.

"Foreign athletes will literally be swimming in human crap, and they risk getting sick from all those microorganisms," Rio paediatrician Dr Daniel Becker told the New York Times. "It's sad but also worrisome."

The Brazilian government had promised to clean the pathogen-infested Guanabara Bay in 2014, but those efforts failed.

Sorry I aint been here, yall, but I been watchin the Rio 2016 Olympics, mostly via NBC primetime, idk!

The Olympics always seemed to me to be about the triumph of human achievement. The propellant of stars from small clusters of athletes. idk yall. I seen some really inspirin stuff, and not much to complain about, 'ceptin fer them golddanged GREEN POOLS IN RIO, what in tarnation.

So, how's about them USA swimmers... #LochteMessMonster... them fellas need to fly back to Rio on their own dime, fix up that bathroom, paint the whole buildin, re-do the roof, and pay a lotta money to the attendant who they assaulted. They pay for it all outta their own money. Oh, and since them privileged assholes done destroyed the USA's image, and tarnished every medal we won, they need to give their own medals back, The Olympics are about honor and sportsmanship, or, they should be. The swimmers done goof'd.

All in all, with some Americans making asses of themselves while getting in trouble with the law being the worst thing that happened, or maybe that guy who broke his leg on live TV, this Olympics turned out a lot less bad than many had feared.